A Simple Solution

To solve this, edit the configuration file to change the “mouse sensitivity”. Although that suggests all mouse sensitivity will be changed, it mainly applies to the rotation.

First exit the game and locate the directory of your savegames. Here, this is below the home directory: $HOME/Larian Studios/Divinity Original Sin Enhanced Edition/Player Profiles. Go to the subdirectory called like your profile and then open config.lsx with a sensible text editor. Find the following entry:

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